Malicious PDF — malware analysis report

Static analysis result for SHA-256 c44f1945784c2574…

MALICIOUS

PDF

50.9 KB Created: 2020-08-29 01:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59951c8f8c999fdaf2b6b754889b1a69 SHA-1: 642d9a2b0936e25b9e019e2d51ee71613fdaa340 SHA-256: c44f1945784c257494e937692fc290e0499bd7d48c368fc0c64a8a8dbc7d4b02
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a tactic often used in SEO link farms to drive traffic. One of these links, 'https://ttraff.com/wix?keyword=r%25C3%25A9sistance+au+changement+lewin', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to this malicious site. No scripts were extracted, limiting further analysis of the payload.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/wix?keyword=r%25C3%25A9sistance+au+changement+lewin
    • https://static.usrfiles.com/ugd/b8c837_51c9bea7256843c986a30719e40de5f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_65e00add5f7e4f819b732a07367ea238.pdf
    • https://static.usrfiles.com/ugd/b8c837_41f77f6964174f279e88c00b328106d1.pdf
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/staind_it_s_been_awhile_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/sizokinusupuxurudisofefi.pdf
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/fobutatugasipunevazezo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/46338401108.pdf
    • https://static.usrfiles.com/ugd/b8c837_e205eb3363e2408e819946be9afc4edc.pdf
    • https://static.usrfiles.com/ugd/b8c837_373ce20d6860424db49265a61ef8f6a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd14f7741d064e7fa4c6a787b5d1c254.pdf
    • https://static.usrfiles.com/ugd/b8c837_52551db70c754f599b83e9b3a7d13f27.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ed0ba18c90e475f9d691b6fc8be1315.pdf
    • https://cdn.shopify.com/s/files/1/0443/2812/4572/files/77836540315.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/ejercicios_del_alfabeto_en_ingles.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000083a9.bin
4994ea0d396e046b5867938b2cc660c2227494b63425c908d852c8683e940390		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A9 5356 bytes
font_01_sfnt_off00009586.bin
c8e562f68fa20fe299327eeade62c3b1aefa5f7c0f5dc3ac9043045829af62e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9586 12468 bytes

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